HoDoKu Solving Technique Index: Example for "Grouped Alternate Inference Chain Type 1 with ALS node"

Solving Technique Example

Original sudoku:

5.7....1....56..87..427...........6.......8.5....5..42.32.9.4..1..3..........265.

Use the following line if you want to load the sudoku in HoDoKu:

:0711:6:5+67...+21+4...56+4+387+3+8427+1+5+9+6.......6+9......8+35....5..42.32.9+54+7+11..3+4.+9+2+8.....265+3::651 661 683:

The following representation can be pasted in most Sudoku programs:

.---------------------.--------------------.----------.

| 5      6      7     | 89     38    389   | 2   1  4 |

| 29     129    19    | 5      6     4     | 3   8  7 |

| 3      8      4     | 2      7     1     | 5   9  6 |

:---------------------+--------------------+----------:

| 2478   12457  1358  | 1478   1238  378   | 17  6  9 |

| 24679  12479  169   | 14679  12    679   | 8   3  5 |

| 6789   179    13689 | 16789  5     36789 | 17  4  2 |

:---------------------+--------------------+----------:

| 68     3      2     | 68     9     5     | 4   7  1 |

| 1      57     56    | 3      4     67    | 9   2  8 |

| 4789   479    89    | 178    18    2     | 6   5  3 |

'---------------------'--------------------'----------'

Representation of the step:

.------------------------.--------------------.----------.

|  5       6       7     | 89     38    389   | 2   1  4 |

|  29      129    A19    | 5      6     4     | 3   8  7 |

|  3       8       4     | 2      7     1     | 5   9  6 |

:------------------------+--------------------+----------:

|  2478    12457   1358  | 1478   1238  378   | 17  6  9 |

|  24-679  12479  *169   | 14679  12    679   | 8   3  5 |

| -6789    179     13689 | 16789  5     36789 | 17  4  2 |

:------------------------+--------------------+----------:

| *68      3       2     | 68     9     5     | 4   7  1 |

|  1       57      5-6   | 3      4     67    | 9   2  8 |

|  4789    479    A89    | 178    18    2     | 6   5  3 |

'------------------------'--------------------'----------'



Grouped AIC 6- r7c1 -8- ALS:r29c3 =6= r5c3 -6 => r56c1,r8c3<>6






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